StacksVerified U.S. regulatory reference

21 CFR §556.330

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)[Reserved]
  2. (b)Tolerances. The tolerances for hygromycin B are:
    1. (1)Chickens. Edible tissues: Zero.
    2. (2)Swine. Edible tissues: Zero.
  3. (c)Related conditions of use. See § 558.274 of this chapter.